Zoned coils giving me a backache

I've been sleeping on the leggett and platt combi-zoned pocket coils with a 3" memory foam topper for about 4 days and my back is killing me. I'm going to give it the standard 30 days to see if it works out. But in the meantime, has anyone else had this problem with combi-zoned coils and ended up getting used to it and liking it?

I've ordered a soft talalay topper to replace the memory foam, but I'm worried that it won't fix this, literally, underlying problem.

Also, my hips are on the firm part of the coils. That's how it's supposed to be, right? My partner said my back looked very well aligned when laying on my side with the firm section under my hips. So I guess my back is just getting used to being well aligned?

Anyway, I'm willing to buy a different coil base if I have to, I guess I'm just hoping to hear from someone who hated their zoned coils at first then loved them.